Table 1.
Patient characteristics in the training set and test set
| Characteristics | Training set (n = 104) | Test set (n = 355) |
|---|---|---|
| Age - Median (Interquartile range) | 64.5 (54.3–77.0) | 66 (54.0–76.0) |
| Male sex no. (%) | 62 (59.6) | 204 (57.5) |
| NIHSSa score Median (interquartile range) | 17 (13–21) | 18 (15–22) |
| Location of stroke in left hemisphere - no. (%) | 52 (50.0) | 190 (53.5) |
| History of ischemic stroke - no. (%) | 8 (7.7) | 37 (10.4) |
| Prestroke modified Rankin scale score - no. (%) | ||
| 0 | 83 (79.8) | 288 (81.1) |
| 1 | 9 (8.7) | 37 (10.4) |
| 2 | 7 (6.7) | 17 (4.5) |
| > 2 | 5 (4.8) | 14 (3.9) |
| Duration (minutes) from stroke onset to imaging – Median (Interquartile range) | 109 (65–201) | 114 (68–196) |
| Reference standard ASPECTS | ||
| Median (interquartile range) | 8 (7–9) | 7 (6–9) |
| 0 (%) | 1 (1) | 1 (0) |
| 1 (%) | 0 (0) | 3 (1) |
| 2 (%) | 0 (0) | 3 (1) |
| 3 (%) | 1 (1) | 10 (3) |
| 4 (%) | 3 (3) | 18 (5) |
| 5 (%) | 6 (6) | 37 (10) |
| 6 (%) | 13 (13) | 36 (10) |
| 7 (%) | 25 (24) | 72 (20) |
| 8 (%) | 25 (24) | 80 (23) |
| 9 (%) | 16 (15) | 52 (15) |
| 10 (%) | 14 (14) | 43 (12) |
aNational Institutes of Health Stroke Scale